implement-and-check SKILL.md skillA
implement-and-check from skillberry-ai/cap-evolve is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add skillberry-ai/cap-evolve/implement-and-check@git:20260822.81c1fd8Pins git:20260822.81c1fd8 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- skillberry-ai/cap-evolve
- Path
skills/phases/implement-and-check/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260822.81c1fd8, committed Aug 22, 2026
- First version recorded
- Jun 17, 2026
- Size
- 8,779 bytes
- Repository stars
- 66
- License
- Apache-2.0
Runs the hard gate that has to pass before any optimization budget is spent. Use right after intake. Walks the agent through implementing the 3 required adapter methods plus any defaulted hooks that need overriding (and any selected skill's abstract methods), then runs `cap-evolve check` on the project plus each involved skill's check.py, listing exactly what is still stubbed or non-deterministic and what to do about each kind of failure.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# implement-and-check — make the contract real
Optimizing against a half-wired adapter produces a number that means nothing: a stub
scorer gives every candidate the same reward, an empty `tasks()` averages over nothing,
a non-deterministic scorer makes the gate chase measurement noise. This phase proves the
measurement apparatus works *before* budget is spent. It is cheaper to fail here than
after a full run.
## Steps
1. **Implement the 3 required adapter methods** in
`.capevolve/project/adapters/adapter.py`. These are the `@abstractmethod`s
(`core/cap_evolve/adapter.py:77-106`) — the gate refuses to run until all three are real:
- `tasks(split)` → `list[Task]` for `'train'|'val'|'test'|'all'`; non-empty, same list
every call.
- `run_target(task, ctx, *, seed=0)` → `Rollout`. Run the agent under test with the
candidate live as `ctx`; capture output + trace + tool calls + cost. Do not score
here. Forward `seed` if the runner is stochastic; set `Rollout.error` on an infra
failure so the engine treats it as noise, not as a low score.
- `score(task, rollout)` → `Score`: reward in `[0,1]` + general feedback (it becomes
…Read the whole file at its exact version.
How to install
mdr add skillberry-ai/cap-evolve/implement-and-check@sha256:b717cc94fc0beac7The line at the top of this page pins the label git:20260822.81c1fd8, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_btpp2h3jlnael5ub)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Jun 17, 2026 and Aug 22, 2026, about one every 17 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260822.81c1fd8 latest | 2026-08-22 | 81c1fd8 | 8,779 B | A | view · diff |
| git:20260822.97934bf | 2026-08-22 | 97934bf | 8,595 B | A | view · diff |
| git:20260730.e47a8e1 | 2026-07-30 | e47a8e1 | 7,084 B | A | view · diff |
| git:20260619.1191ca1 | 2026-06-19 | 1191ca1 | 5,904 B | A | view · diff |
| git:20260617.92b5c65 | 2026-06-17 | 92b5c65 | 4,364 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (8779 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
skillberry-ai/cap-evolve · 66 stars · license Apache-2.0 · pushed 2026-10-21 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_btpp2h3jlnael5ub GET https://markdownregistry.com/api/v1/resolve?ref=skillberry-ai/cap-evolve/implement-and-check GET https://markdownregistry.com/api/v1/blob/b717cc94fc0beac75cd3a835b4e119aa314f359535c820c63c18c80fdf9c9e5b
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.